PBD | Pysical Based Dynamics | Simulation Stages | UE4 Niagara Tutorial
Added 2021-03-06 04:38:50 +0000 UTCoutVel = myVel;
int pNum;
PAR.GetNumParticles(pNum);
for(int i=0; i<pNum; i++){
bool myBool;
float3 OtherPos;
PAR.GetVectorByIndex<Attribute="Position">(i, myBool, OtherPos);
float3 OtherScale;
PAR.GetVectorByIndex<Attribute="Scale">(i, myBool, OtherScale);
float3 localVec = OtherPos - myPos;
float vecSq = dot(localVec,localVec);
float rSq = myScale.x + OtherScale.x;
rSq *= rSq;
float3 nrmLocalVec = normalize(localVec);
if(vecSq < rSq && vecSq > 0.01f){
outVel = myVel - 2.0f * (-nrmLocalVec) * dot(myVel, -nrmLocalVec);
}
}
